Device for sharpening blades



Sept. 7, 1937. J. c. Scl-IAF, .JR

DEVICE FOR SHARPENING BLADES Original Filed July 26, 1929 IN VEN TOR. Jasf/f/ Y 5ta/9,5 Ji?.

A TTORNEYS.

BY ,A

Patented Sept. 7, 1937 UNITED STATESv MJS? PATE'E' OFFIQE DEVICE FOR SHARPENING BLADES apolis, Ind.

Application July 26, 1929, Serial No. 381,136 Renewed September 2, 1932 12 Claims.

This invention relates to a machine for sharpening or honing safety razor blades.

The principal `feature of the invention resides in the provision of means for honing or sharpening a safety razor blade by maintaining the same in contact with a vibratory honing or sharpening element.

Another feature resides in the particular form of mechanism employed to impart a vibratory motion to the honing element.

Other features of the invention and the full nature thereof will be understood from the accompanying drawing and the following description and claims:

Fig. 1 is a cross section showing the principal parts of the apparatus in detail. Fig. 2 is a sectional view taken on the line 2-2 of Fig. l. Fig. 3 is a sectional View taken on the line 3-3 of Fig. 1.

A housing I0 is provided with a cover I I hinged thereto at I2 and fastened thereto when closed by fastening members I3. Within the housing I0 is provided a vibratory solenoid I4 of any common form adapted to impart vertical vibratory movement to a plunger or armature I5. Herein the said vibratory solenoid is shown as consisting of a central sleeve 3 I, end members 32 forming with the said sleeve a spool upon which a suitable winding 33 is wound and a stationary 30 core 34 threadedly engaged in the lower end of the sleeve 3|. A support member I6 is suitably fastened within the housing Il] and carries downfolded portions II in turn carrying a pair of transverse rivet pins I8. Each of the pins I8 pivotally supports a pair of lever members I9 projecting upward through openings 20 in the member I6. At the upper end of the lever members I9 are formed socket portions ZI for the reception of a pair of sharpening or honing elements 22. The lower arms of the lever members I9 pivotally engage a pin 23 passing through the upper end of the plunger I 5. Thus, the vertical vibratory motion of the plunger I5 imparts horizontal vibratory motion to the honing elements 22.

Carried on the support member I6 is a plurality of pins 24 adapted to engage the usual openings in a safety razor blade 25. On the underside of the cover II is carried a blade-engaging member 26 carrying openings 21 for the admission of the upper ends of the pins 24. In placing a razor blade in position for sharpening, the cover is opened, the blade is placed in position with the openings therein engaging the pins 24 and the cutting edges engaging the sharpening elements. The cover is then closed bringing the member 26 into engagement with the razor blade to hold it in position. Power is then applied to the solenoid by means of electric connections 28 and an electric switch 29 contained within the housing IB and operated by a knob 3E! projecting therefrom.

While the preceding specications describe a preferred form of the invention, it is to be understood that several variations from the details thereof may be made without departing from the broader features of the invention. As an example, either the well known alternating current vibratory solenoid or a direct current solenoid of the make and break type may be used. Certain features of the invention are not dependent upon the use of a vibratory solenoid since any other suitable source of vibratory motion may be used therewith.

The invention claimed is:

1. A razor blade Sharpener comprising a support, a sharpening element for receiving the edge of a blade to be sharpened thereby, an electromagnetic vibrator mounted upon said support, and means actuated thereby for setting up a vi- I bratory movement between said blade and sharpening element.

2. A razor blade Sharpener comprising a support, an electro-magnet mounted upon said support, an armature associated with said magnet to which a vibratory movement is imparted thereby, a sharpening element for receiving the edge of a blade to be sharpened, and means on said armature for setting up a vibratory movement between the blade and sharpening element.

3. A razor blade Sharpener comprising a support, a sharpening element adapted to be engaged by the edge of a razor blade to be sharpened thereby, an electro-magnet mounted upon said support, and a lever on said support adapted to be vibrated by the magnetic forces of said electro-magnet to set up a vibratory movement between said blade and sharpening elements.

4. A razor blade Sharpener comprising a support, a sharpening element adapted to be engaged by the edge of a razor blade to be sharpened thereby, an electro-magnet mounted upon said support, a lever on said support adapted to be vibrated by the magnetic forces of said electromagnet to set up a vibratory movement between said blade sharpening elements, and means for engaging the blade for holding the edge thereof in sharpening relation with and at an angle to the surface of said element.

5. A razor blade Sharpener comprising a support, a pair of oppositely-disposed sharpening elements spaced from each other to be engaged by vibrator for setting up a vibratory movement liethe edges of a blade to be sharpened, means for supporting said elements on said support, and an electro-magnetic vibrator for rapidly oscillating said elements in an arc having its center of curvature substantially at the point of support.

6. A razor blade Sharpener comprising a support, a pair of sharpening elements spaced from each other, means for supporting said elements on said support at an angle to each other when in operative position for receiving the edges of a blade to be sharpened, and an electro-magnetic tween said blade and elements, for causing the edges of the blade to be raised and lowered with respect to said elements during the sharpening operation.

'7. A razor blade Sharpener comprising a Support, a lever pivotally supported by a portion of said support, a sharpening element carried upon one end of Said lever, a pin carried upon said support and adapted to engage an opening in a razor blade for positioning the same with its cutting edge in contact with said sharpening element, and means for imparting a vibratory motion to said lever and said sharpening element.

8, In a blade Sharpener, a housing, a vibratory solenoid having an armature, said solenoid being mounted Within Said housing, pivoted bell-crank levers mounted in said housing, Sharpening elements carried by one end of said levers, means topivotally secure the other ends to the armature, vand means to maintain a blade in juxtaposition to the sharpening elements.

9. In a blade Sharpener, oppositely-positioned pivoted bell crank levers, sharpening elements carried by one end of said levers, a vibratory member, means for pivotally securing the opposite end of each of said levers to said vibratory members, means for maintaining a blade in juxtaposition to said sharpening elements, and means for imparting a vibratory motion to said vibratory member whereby said sharpening elements are vibrated toward and away from each other to sharpen said blade.

10. A cutting edge Sharpener, comprising a member upon which the cutting edge is adapted to rest in contact therewith, electro-magnetic means operable on one of said contacting parts when a cutting edge is resting upon and in contact with said member to cause a relative movelment between'said member and the cutting edge resting thereon in a direction substantially crosswise of said cutting edge, and means to electrically energize said electro-magnetic means and cause it to operate on said part.

1l. A cutting edge Sharpener, comprising a member upon which the cutting edge is adapted torest in contact therewith, and electro-magnetic means adapted to be intermittently energized to move one of said parts when a cutting edge is resting upon and in'contactwith said member to cause it to slide upon the other in a direction substantially crosswise of the cutting edge, and means te .intermittently energize said electromagnetic means. i .c

12. A razor blade Sharpener, comprising a pair of spaced-apart and substantially vertically-disposed members, each having a supporting surface upon its upper edge` on which the cutting edge of a blade may rest in contact therewith and the blade supported thereby,` an electromagnet disposedk between said members below a blade when supported thereon, and means to energize said electro-magnet to cause it toV vibrate one of the parts. when a blade isbeing supported with its cutting edge resting on and. in Contact with one of Said members to effect relative moveblade edges.

JOSEPH C. sCHAF; JR). 

